155540202 has 64 divisors (see below), whose sum is σ = 330891264. Its totient is φ = 48686400.

The previous prime is 155540201. The next prime is 155540219. The reversal of 155540202 is 202045551.

It is a happy number.

155540202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (155540201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1224663 + ... + 1224789.

It is an arithmetic number, because the mean of its divisors is an integer number (5170176).

Almost surely, 2^155540202 is an apocalyptic number.

155540202 is an abundant number, since it is smaller than the sum of its proper divisors (175351062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155540202 is a wasteful number, since it uses less digits than its factorization.

155540202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 155540202 is about 12471.5757625089. The cubic root of 155540202 is about 537.7918539024.

Adding to 155540202 its reverse (202045551), we get a palindrome (357585753).

The spelling of 155540202 in words is "one hundred fifty-five million, five hundred forty thousand, two hundred two".